Tastemakers are the ones that decide who they would like to have direct communication with. Once you submit, the tastemaker can decide if they would like to communicate with you further. Your music doesn't need to be shared or even liked by the tastemaker in order for them to open communication with you.
Once a tastemaker decides to open communication with you, you will receive a notification, or a chat icon next to the tastemaker feedback in your campaign results page.